EP2079971B1 - Vorrichtung für kühlzyklus und kühlvorrichtung - Google Patents

Vorrichtung für kühlzyklus und kühlvorrichtung Download PDF

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Publication number
EP2079971B1
EP2079971B1 EP07833812.6A EP07833812A EP2079971B1 EP 2079971 B1 EP2079971 B1 EP 2079971B1 EP 07833812 A EP07833812 A EP 07833812A EP 2079971 B1 EP2079971 B1 EP 2079971B1
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EP
European Patent Office
Prior art keywords
refrigerant
cold air
generating unit
evaporator
air generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07833812.6A
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English (en)
French (fr)
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EP2079971A4 (de
EP2079971A2 (de
Inventor
Moo Yeon Lee
Myung Ryul Lee
Jong Jin Park
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
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Publication of EP2079971A2 publication Critical patent/EP2079971A2/de
Publication of EP2079971A4 publication Critical patent/EP2079971A4/de
Application granted granted Critical
Publication of EP2079971B1 publication Critical patent/EP2079971B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor

Definitions

  • the present invention relates to a refrigeration-cycle apparatus and a refrigerator, and more particularly, to a refrigeration-cycle apparatus capable of stably generating cold air of various temperature bands, and a refrigerator employing the refrigeration-cycle apparatus to realize cooling compartments generating cold air of various temperature bands.
  • a refrigeration cycle is a thermodynamic cycle that absorbs heat from a cooling substance and transmits the absorbed heat to a heating substance.
  • the most basic apparatus constituting the refrigeration cycle includes a compressor, a condenser, an expansion valve, and an evaporator.
  • the compressor serves to compress a refrigerant and discharge a high-temperature and high-pressure gas-phase refrigerant.
  • the condenser serves to condense the high-temperature and high-pressure gas-phase refrigerant discharged from the compressor and make a normal-temperature and high-pressure or low-temperature and high-pressure liquid-phase refrigerant.
  • the normal-temperature and high-pressure or low-temperature and high-pressure refrigerant is expanded while passing through the expansion valve, to thereby be changed into a low-temperature and low-pressure refrigerant.
  • the expanded refrigerant is evaporated in the evaporator, and is further lowered in temperature and pressure. In the process of evaporation, the refrigerant draws heat from the surroundings, thereby cooling the surrounding air.
  • the refrigerant is returned to the compressor and compressed again, and the above described cycle is repeatedly carried out.
  • the evaporator operates to draw heat from the surroundings and generate cooled air, namely, cold air.
  • a refrigerator is configured to cool the interior of a cooling compartment by blowing the cold air into the cooling compartment under the operation of a fan.
  • an evaporator is installed in the freezing compartment to generate cold air having a temperature band required for the freezing compartment.
  • the cooling of the refrigerating compartment is accomplished as a part of the cold air generated in the freezing compartment is supplied into the refrigerating compartment.
  • a problem of this cooling manner is that the refrigerating compartment has a very uneven temperature distribution, and moreover, the temperature distribution of the freezing compartment also becomes uneven as the cold air is transmitted into the refrigerating compartment.
  • the conventional refrigerator includes only the freezing compartment, serving as a cooling compartment of a relatively low-temperature band, and the refrigerating compartment serving as a cooling compartment of a relatively high-temperature band.
  • the refrigerating compartment serving as a cooling compartment of a relatively high-temperature band.
  • JP S58 88562 A describes a refrigerating cycle apparatus having a compressor and a condenser. The output of the condenser is provided to a T-type connector.
  • JP S50 96963 A describes refrigerating cycle apparatus having a compressor, a condenser and several evaporators connected in parallel and series relationship.
  • JP 2003 240412 A describes a refrigerator including a first cooler for a refrigerating chamber and a vegetable chamber and a second cooler for a freezing chamber, and which are provided with a second auxiliary condenser and a first auxiliary condenser, respectively.
  • JP S55 38437 A describes refrigerating cycle apparatus having a compressor, condenser and several evaporators connected in parallel and series relationship.
  • US 3 638 447 A describes a refrigerator having a refrigerating vessel divided into a plurality of compartments comprising either cold storage compartments or at least one cold storage compartment and one freezing compartment each of which is provided with an evaporator for the refrigeration thereof.
  • Capillary tubes are provided for supplying the refrigerant to the individual evaporators in the compartments, and heating coils are wound around portions of the capillary tubes. An electric current is caused to flow through the heating coils in order to provide individual control of the supply of the quantity of refrigerant.
  • JP 2003 207249 A describes a refrigerator.
  • Refrigerant flows to a compressor by passing through a condenser, a first capillary tube, coolers, and an accumulator, or by passing through the condenser, a second capillary tube, further coolers, and the accumulator.
  • KR 960 024 138 A describes a refrigeration control apparatus of a refrigerator.
  • the refrigeration control apparatus has two evaporators and a connection path.
  • An object of the present invention devised to solve the problem lies on a refrigeration-cycle apparatus, which includes a plurality of evaporators having different temperature bands from one another, and a refrigerator, which includes a plurality of cooling compartments to enable stable and even cooling operations in various temperature bands with the use of the plurality of evaporators.
  • Another object of the present invention devised to solve the problem lies on a refrigeration-cycle apparatus and a refrigerator, in which some of a plurality of evaporators can be operated individually, thereby achieving a reduction in the consumption of energy and enabling the accurate control of an interior temperature of the refrigerator.
  • Yet another object of the present invention devised to solve the problem lies on a refrigeration-cycle apparatus and a refrigerator, in which appropriate condensers can be operated selectively in consideration of an interior cooling load of the refrigerator, thereby restricting the excessive loss of condensation and resulting in improved system efficiency.
  • a refrigeration-cycle apparatus comprises: a compressor to compress and discharge a refrigerant; a condensing unit including at least one condenser to condense the refrigerant discharged from the compressor; a distributor to distribute the refrigerant condensed in the condensing unit; and a cold air generating unit including a plurality of evaporators each to evaporate the refrigerant distributed by the distributor, the evaporators being connected in series and parallel to one another and operated, respectively, to generate cold air having different temperature bands from one another.
  • the cold air generating unit comprises: a first cold air generating unit to generate cold air from a part of the refrigerant distributed from the distributor; and a second cold air generating unit connected parallel to the first cold air generating unit and used to generate cold air from the remaining part of the refrigerant distributed from the distributor, the second cold air generating unit having a selective refrigerant flow with the first cold air generating unit.
  • the distributor may comprise a valve to supply the condensed refrigerant from the condensing unit into the first cold air generating unit and the second cold air generating unit simultaneously or selectively.
  • the first cold air generating unit comprises: a first refrigerant flow-path connected to the distributor for the flow of the refrigerant; a first expander installed on the first refrigerant flow-path and used to expand the refrigerant; and a first evaporating unit including a plurality of evaporators connected in series to evaporate the refrigerant expanded in the first expander, so as to generate cold air having different temperature bands from one another.
  • the second cold air generating unit comprises: a second refrigerant flow-path connected to the distributor for the flow of the refrigerant; a second expander installed on the second refrigerant flow-path and used to expand the refrigerant; an evaporator to evaporate the refrigerant expanded in the second expander, so as to generate cold air; and a connector to connect the first refrigerant flow-path and the second refrigerant flow-path to each other, to achieve a selective refrigerant flow between the first refrigerant flow-path and the second refrigerant flow-path.
  • the second cold air generating unit comprises: a second refrigerant flow-path connected to the distributor for the flow of the refrigerant; a second expander installed on the second refrigerant flow-path and used to expand the refrigerant; a second evaporating unit including a plurality of evaporators connected in series to evaporate the refrigerant expanded in the second expander, so as to generate cold air having different temperature bands from one another; and a connector to connect the first refrigerant flow-path and the second refrigerant flow-path to each other, to achieve a selective refrigerant flow between the first refrigerant flow-path and the second refrigerant flow-path.
  • the first evaporating unit may comprise: a first-band evaporator to evaporate the refrigerant so as to generate cold air having a predetermined temperature band; a second-band evaporator to again evaporate the refrigerant having passed through the first-band evaporator, so as to generate cold air having a lower temperature hand than that of the first-band evaporator; and an intermediate expander installed between the first-band evaporator and the second-band evaporator and used to expand the refrigerant having passed through the first-band evaporator and introduce the expanded refrigerant into the second-band evaporator.
  • the first evaporating unit may further comprise: at last one parallel-connection evaporator connected parallel to at least one of the first-band evaporator and the second-band evaporator and used to generate cold air.
  • At least one of the first-band evaporator, the second-band evaporator, and the at least one parallel-connection evaporator may include an indirect-cooling type evaporator.
  • the condensing unit may comprise: a first condenser to condense the refrigerant to be supplied into the first cold air generating unit; and a second condenser to condense the refrigerant to be supplied into the second cold air generating unit.
  • the refrigeration-cycle apparatus may further comprise: a distribution valve to distribute and supply the refrigerant discharged from the compressor into the first condenser and the second condenser.
  • the connector may comprise: a connecting pipe to connect a position downstream of the first evaporating unit to a position downstream of the second expander, for the flow of the refrigerant; and a control valve to control the flow of the refrigerant through the connecting pipe.
  • the connector may comprise: a connecting pipe to connect a position between the plurality of evaporators of the first evaporating unit to a position downstream of the second expander, for the flow of the refrigerant; and a control valve to control the flow of the refrigerant through the connecting pipe.
  • a refrigeration-cycle apparatus comprising: a compressor to compress and discharge a refrigerant; a condensing unit including at least one condenser to condense the refrigerant discharged from the compressor; and a refrigeration-cycle unit to simultaneously or selectively perform a plurality of refrigeration-cycle operations using the condensed refrigerant from the condensing unit, so as to enable cooling operations in various temperature bands.
  • the refrigeration-cycle unit may comprise: a distributor to distribute the refrigerant condensed in the condensing unit into a plurality of passages simultaneously or into only a part of the passages selectively; a first cold air generating unit to perform a refrigeration-cycle operation using a part of the refrigerant distributed by the distributor; and a second cold air generating unit to perform another refrigeration-cycle operation using the remaining part of the refrigerant distributed by the distributor.
  • a refrigerator comprising: a body; a refrigeration-cycle apparatus installed in the body, and including a compressor to compress and discharge a refrigerant, a condensing unit to condense the refrigerant discharged from the compressor, a distributor to distribute the refrigerant condensed in the condensing unit, a first cold air generating unit to generate cold air from a part of the refrigerant distributed from the distributor, and a second cold air generating unit connected to the first cold air generating unit and used to generate cold air from the remaining part of the refrigerant distributed from the distributor, the second cold air generating unit having a selective refrigerant flow with the first cold air generating unit; and a plurality of cooling compartments provided in the body and adapted to be cooled, respectively, by cold air having different temperature bands from one another generated from the first cold air generating unit and the second cold air generating unit.
  • the first cold air generating unit may comprise a plurality of evaporators connected in series and used, respectively, to generate the cold air having different temperature bands from one another, and a part of the plurality of cooling compartments may include cooling storage compartments to be cooled, respectively, by the cold air having different temperature bands from one another generated by the plurality of evaporators included in the first cold air generating unit.
  • the first cold air generating unit may comprise a plurality of evaporators connected in series and used, respectively, to generate the cold air having different temperature bands from one another, and one of the plurality of cooling compartments may comprise a plurality of cooling spaces partitioned therein to be cooled, respectively, by the cold air having different temperature bands from one another generated by the plurality of evaporators included in the first cold air generating unit.
  • the second cold air generating unit may comprise an evaporator to generate cold air, and the remaining part of the plurality of cooling compartments may comprise a cooling storage compartment to be cooled by the evaporator of the second cold air generating unit.
  • the second cold air generating unit may comprise a plurality of evaporators connected in series and used, respectively, to generate the cold air having different temperature bands from one another, and the remaining part of the plurality of cooling compartments may comprise a plurality of cooling storage compartments to be cooled, respectively, by the cold air having different temperature bands from one another generated by the plurality of evaporators included in the second cold air generating unit.
  • a part of the plurality of cooling compartments may comprise a direct-cooling type cooling compartment realized by at least one direct-cooling type evaporator included in the first cold air generating unit or the second cold air generating unit.
  • a plurality of evaporators having different temperature bands from one another can be realized, and consequently, cooling compartments to enable cooling operations in various temperature bands can be realized. Accordingly, the resulting refrigerator can satisfy various demands of consumers. Further, as a result of providing each cooling compartment with an independent evaporator, the present invention is very advantageous not only to maintain an interior humidity of the refrigerator, but also to achieve the accurate control of an interior temperature of the refrigerator. In particular, the present invention can allow the respective evaporators to be operated individually, and reduce the consumption of energy.
  • appropriate condensers can be operated selectively in consideration of an interior cooling load of the refrigerator. This has an advantage of preventing the excessive loss of condensation and resulting in improved system efficiency.
  • FIG. 1 is a view illustrating a refrigerator according to an embodiment of the present invention
  • FIG. 2 is a view illustrating a refrigerator according to another embodiment of the present invention
  • FIGs. 3 to 8 are views illustrating different embodiments of a refrigeration-cycle apparatus according to the present invention
  • FIG. 9 is a PH diagram related to a refrigeration cycle realized by the refrigeration-cycle apparatus according to the present invention.
  • the refrigerator includes a body 600 defining the overall outer appearance of the refrigerator, a first cooling compartment 610 provided in one side of an upper region of the body 600, a second cooling compartment 620 provided in one side of a lower region of the body 600, a third cooling compartment 630 provided in the other side of the upper region of the body 600, and a fourth cooling compartment 640 provided in the other side of the lower region of the body 600.
  • the cooling compartments 610, 620, 630, and 640 are provided, respectively, with doors 710, 720, 730, and 740 as opening/closing means.
  • the refrigerator shown in FIG. 1 has a feature in that the respective cooling compartments 610, 620, 630, and 640 are cooled by cold air of different temperature bands from one another.
  • the first cooling compartment 610, the third cooling compartment 630, and the fourth cooling compartment 640 are realized as cooling compartments of a general indirect-cooling type
  • the second cooling compartment 620 is realized as a cooling compartment of a direct-cooling type and is suitable for use as a storage compartment for a Kim-chi refrigerator.
  • a refrigeration-cycle apparatus to generate cold air of various temperature bands for use in the above described cooling compartments will be described later.
  • FIG. 1 illustrates one embodiment in which cooling compartments, having different temperature bands from one another, are provided independently
  • FIG. 2 illustrates another embodiment in which a refrigerator includes two cooling compartments, and each cooling compartment includes independent cooling spaces separated from each other. It will be appreciated that the refrigerator shown in FIG. 2 has almost similar effects to the refrigerator shown in FIG. 1 that realizes the independent cooling compartments of different temperature bands from one another.
  • the refrigerator includes the body 600, the first cooling compartment 610 provided in one side of the body 600, and the third cooling compartment 630 provided in the other side of the body 600. Also, the refrigerator includes the first door 710 to open or close the first cooling compartment 610, and the third door 730 to open or close the third cooling compartment 630.
  • the first cooling compartment 610 includes a first cooling space 611 partitioned in one side thereof, and a second cooling space 612 partitioned in the other side thereof.
  • the first cooling space 611, the second cooling space 612, and the third cooling compartment 630 are cooled by cold air having different temperature bands from one another.
  • the refrigeration-cycle apparatus includes a compressor 100 to compress and discharge a refrigerant, a condensing unit 200 connected to the compressor 100 and used to condense the compressed refrigerant, a distributor 300 to distribute the refrigerant, having passed through the condensing unit 200, into a first refrigerant flow-path 410 and a second refrigerant flow-path 510, and cold air generating units 400 and 500 including a plurality of evaporators 431, 432, and 530 installed on the first refrigerant flow-path 410 and the second refrigerant flow-path 510 in such a manner of being connected in series and parallel to one another, and used to generate cold air of different temperature bands from one another.
  • the compressor 100 may be a variable-capacity compressor that can regulate the amount of a refrigerant to be compressed and thus, can change a cooling capability according to different refrigeration loads, or may be a constant-speed type compressor. In the case of the constant-speed type compressor, it always discharges a predetermined amount of refrigerant, and the cooling capability can be changed by adjusting the distributor 300 or other various expanders or valves, or the like.
  • the cold air generating units 400 and 500 include a first cold air generating unit 400 and a second cold air generating unit 500.
  • the first cold air generating unit 400 includes the first refrigerant flow-path 410, a first expander 420 installed on the first refrigerant flow-path 410 and used to expand the refrigerant, and a first evaporating unit 430 to evaporate the refrigerant expanded in the expander 420, so as to generate cold air of different temperature bands from one another.
  • the first evaporating unit 430 includes a first-band evaporator 431 to primarily evaporate the expanded refrigerant from the first expander 420 so as to generate cold air, an intermediate expander 433 to again expand the evaporated refrigerant having passed through the first-band evaporator 431, and a second-band evaporator 432 to secondarily evaporate the expanded refrigerant having passed through the intermediate expander 433 so as to generate cold air.
  • the procedure "1 ⁇ 2" represents a refrigerant compressing procedure by the compressor 100
  • the procedure “2 ⁇ 3 ⁇ 4" represents a refrigerant condensing procedure by the condensing unit 200
  • the procedure “4 ⁇ R11” represents a refrigerant expanding procedure by the first expander 420
  • the procedure “1 ⁇ 2” represents a refrigerant compressing procedure by the compressor 100
  • the procedure “2 ⁇ 3 ⁇ 4" represents a refrigerant condensing procedure by the condensing unit 200
  • the procedure “4 ⁇ R11” represents a refrigerant expanding procedure by the first expander 420
  • the procedure “1 ⁇ 2” represents a refrigerant compressing procedure by the compressor 100
  • the procedure “2 ⁇ 3 ⁇ 4" represents a refrigerant condensing procedure by the condensing unit 200
  • the procedure “4 ⁇ R11” represents a refrigerant expanding procedure by the first expander 420
  • the procedure “1 ⁇ 2” represents a refrigerant compressing procedure
  • the procedure "R11 ⁇ R12” represents a refrigerant evaporating procedure for generating cold air by the first-band evaporator 431
  • the procedure “R12 ⁇ R21” represents a refrigerant expanding procedure, i.e. a pressure drop procedure by the intermediate expander 433
  • the procedure “R21 ⁇ R22” represents a refrigerant evaporating procedure for generating cold air by the second-band evaporator 432.
  • the second cold air generating unit 500 performs a refrigeration cycle in the sequence of 1 ⁇ 2 ⁇ 3 ⁇ 4 ⁇ 5 ⁇ 1, and the first cold air generating unit 400 performs a refrigeration cycle in the sequence of R22 ⁇ 2 ⁇ 3 ⁇ 4 ⁇ R11 ⁇ R12 ⁇ R21 ⁇ R22.
  • the refrigerant having passed through the first cold air generating unit 400 and the second cold air generating unit 500 is again introduced into the compressor 100, to proceed a next cycle.
  • the refrigerant having passed through the second cold air generating unit 500 has a lower pressure than that of the refrigerant having passed through the first cold air generating unit 400, there is a risk that the refrigerant having passed through the first cold air generating unit 400 flows backward to the second cold air generating unit 500.
  • a check valve 550 is installed downstream of the second cold air generating unit 500.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (11)

  1. Kühlschrank, der Folgendes umfasst:
    einen Körper (600);
    einen Kompressor (100), um ein Kühlmittel zu komprimieren und abzuführen;
    eine Kondensationseinheit (200), die wenigstens einen Kondensator (210, 220) zum Kondensieren des Kühlmittels, das von dem Kompressor (100) abgeführt wird, umfasst;
    einen Verteiler (300) zum Verteilen des Kühlmittels, das in der Kondensationseinheit (200) kondensiert wird;
    und
    eine Kaltlufterzeugungseinheit (400, 500), die mehrere Verdampfer (431, 432; 531, 532) umfasst, wovon jeder das Kühlmittel verdampft, das durch den Verteiler (300) verteilt wird, wobei die mehreren Verdampfer (431, 432; 531, 532) miteinander in Reihe und parallel geschaltet sind und jeweils betrieben werden, um Kaltluft zu erzeugen, die jeweils unterschiedliche Temperaturbänder aufweist,
    wobei die Kaltlufterzeugungseinheit (400, 500) Folgendes umfasst:
    eine erste Kaltlufterzeugungseinheit (400) zum Erzeugen von Kaltluft von einem Teil des Kühlmittels, das von dem Verteiler (300) verteilt wird; und
    eine zweite Kaltlufterzeugungseinheit (500), die zu der ersten Kaltlufterzeugungseinheit (500) parallel geschaltet ist und verwendet wird, Kaltluft aus dem verbleibenden Teil des Kühlmittels zu erzeugen, das von dem Verteiler (300) verteilt wird, wobei die zweite Kaltlufterzeugungseinheit (500) eine wahlweise Kühlmittelströmung mit der ersten Kaltlufterzeugungseinheit (400) aufweist; und
    mehrere Kühlfächer (610, 620, 630, 640), die in dem Körper (600) vorgesehen sind und ausgelegt sind, jeweils durch Kaltluft gekühlt zu werden, die jeweils unterschiedliche Temperaturbänder aufweist, die durch die erste und die zweite Kaltlufterzeugungseinheit (400, 500) erzeugt wird;
    wobei die erste Kaltlufterzeugungseinheit (400) Folgendes umfasst:
    einen ersten Kühlmittelströmungspfad (410), der mit dem Verteiler (300) verbunden ist;
    einen ersten Expander (420), der an dem ersten Kühlmittelströmungspfad (410) eingebaut ist, um das Kühlmittel zu expandieren; und
    mehrere erste Verdampfer (431, 432), die in Reihe geschaltet sind, um das Kühlmittel zu verdampfen, das in dem ersten Expander (420) expandiert wird, um so Kaltluft zu erzeugen, die jeweils unterschiedliche Temperaturbänder aufweist,
    wobei die mehreren ersten Verdampfer (431, 432) Folgendes umfassen:
    einen Verdampfer (431) für das erste Band, um das Kühlmittel so zu verdampfen, dass Kaltluft erzeugt wird, die ein vorgegebenes Temperaturband hat;
    einen Verdampfer (432) für das zweite Band, um das Kühlmittel erneut zu verdampfen, das durch den Verdampfer (431) für das erste Band gelaufen ist, um so Kaltluft zu erzeugen, die ein niedrigeres Temperaturband als das des Verdampfers (431) für das erste Band aufweist, wobei ein Zwischenexpander (433) zwischen dem Verdampfer (431) für das erste Band und dem Verdampfer (432) für das zweite Band eingebaut ist und verwendet wird, das Kühlmittel zu expandieren, das durch den Verdampfer (431) für das erste Band gelaufen ist und um das expandierte Kühlmittel in den Verdampfer (432) für das zweite Band zu leiten,
    wobei die zweite Kaltlufterzeugungseinheit (500) Folgendes umfasst:
    einen zweiten Kühlmittelströmungspfad (510), der mit dem Verteiler (300) verbunden ist;
    einen zweiten Expander (520), der an dem zweiten Kühlmittelströmungspfad (510) eingebaut ist, um das Kühlmittel zu expandieren;
    wenigstens einen zweiten Verdampfer (530), um das Kühlmittel zu verdampfen, das in dem zweiten Expander (520) expandiert wird, um so Kaltluft zu erzeugen; und
    ein Verbindungselement (540), um den ersten Kühlmittelströmungspfad (410) und den zweiten Kühlmittelströmungspfad (510) zwischen einem Punkt hinter dem Verdampfer (432) für das zweite Band oder dem Zwischenexpander (433) und einem Punkt vorgeschaltet zu dem wenigstens einen zweiten Verdampfer (530) miteinander zu verbinden, um eine wahlweise Kühlmittelströmung zwischen dem ersten Kühlmittelströmungspfad (410) und dem zweiten Kühlmittelströmungspfad (510) bereitzustellen, um so einen Druckunterschied zwischen dem Kühlmittel, das durch den wenigstens einen der mehreren ersten Verdampfer (431, 432) gelaufen ist, und dem Kühlmittel, das durch den zweiten Kühlmittelströmungspfad (510) strömt, zu verringern, und um einen Überhitzungsgrad des Kühlmittels, das durch den wenigstens einen der mehreren ersten Verdampfer (431, 432) gelaufen ist, einzustellen,
    wobei der erste Expander (420) eine kürzere Länge als der zweite Expander (520) aufweist, so dass der zweite Expander (520) einen größeren Druckabfall als der erste Expander (420) aufweist.
  2. Kühlschrank nach Anspruch 1, wobei der Verteiler (300) ein Ventil umfasst, um das kondensierte Kühlmittel von der Kondensationseinheit (200) gleichzeitig oder wahlweise der ersten Kaltlufterzeugungseinheit (400) bzw. der zweiten Kaltlufterzeugungseinheit (500) zuzuführen.
  3. Kühlschrank nach Anspruch 1, wobei der wenigstens eine zweite Verdampfer (530) mehrere Verdampfer (531, 532) umfasst, die in Reihe geschaltet sind, um das Kühlmittel, das in dem zweiten Expander (520) expandiert wird, zu verdampfen, um so Kaltluft zu erzeugen, die jeweils unterschiedliche Temperaturbänder aufweist.
  4. Kühlschrank nach Anspruch 1, wobei die erste Verdampfereinheit (430) ferner Folgendes umfasst:
    wenigstens einen parallel geschalteten Verdampfer (434, 435), der parallel zu dem Verdampfer (431) für das erste Band und/oder zu dem Verdampfer (432) für das zweite Band geschaltet ist und verwendet wird, um Kaltluft zu erzeugen.
  5. Kühlschrank nach Anspruch 4, wobei der Verdampfer (431) für das erste Band, der Verdampfer (432) für das zweite Band und/oder der wenigstens eine parallel geschaltete Verdampfer (434, 435) einen Verdampfer vom Typ mit indirekter Kühlung umfassen.
  6. Kühlschrank nach einem der Ansprüche 1 bis 5, wobei die Kondensationseinheit (200) Folgendes umfasst:
    einen ersten Kondensator (210), um das Kühlmittel zu kondensieren, das der ersten Kaltlufterzeugungseinheit (400) zugeführt werden soll; und
    einen zweiten Kondensator (220), um das Kühlmittel zu kondensieren, das der zweiten Kaltlufterzeugungseinheit (500) zugeführt werden soll; und
    ein Verteilungsventil (310), um das Kühlmittel, das von dem Kompressor (100) abgeführt wurde, zu verteilen und dem ersten Kondensator (210) und dem zweiten Kondensator (220) zuzuführen.
  7. Kühlschrank nach einem der Ansprüche 1 bis 6, wobei das Verbindungselement (540) Folgendes umfasst:
    eine Verbindungsleitung (541), um eine Position hinter den mehreren ersten Verdampfern (431, 432) mit einer Position hinter dem zweiten Expander (520) für die Strömung des Kühlmittels zu verbinden; und
    ein Steuerventil (542b), um die Strömung des Kühlmittels durch die Verbindungsleitung (541) zu steuern.
  8. Kühlschrank nach einem der Ansprüche 1 bis 6, wobei das Verbindungselement (540) Folgendes umfasst:
    eine Verbindungsleitung (541), um eine Position zwischen den mehreren Verdampfern (431, 432) mit einer Position hinter dem zweiten Expander (520) für die Strömung des Kühlmittels zu verbinden; und
    ein Steuerventil (542a), um die Strömung des Kühlmittels durch die Verbindungsleitung (541) zu steuern.
  9. Kühlschrank nach einem der Ansprüche 1 bis 8,
    wobei ein Teil der mehreren Kühlfächer (610, 620, 630, 640) Kühllagerungsfächer (611, 612) umfasst, die jeweils durch die Kaltluft gekühlt werden, die jeweils unterschiedliche Temperaturbänder im Vergleich zu der Temperatur eines weiteren Kühlfachs hat, die durch die mehreren ersten Verdampfer (431, 432) erzeugt wird, die in der ersten Kaltlufterzeugungseinheit (400) enthalten sind,
    wobei das Kühllagerungsfach (611, 612) in dem Teil der mehreren Kühlfächer (610, 620, 630, 640) abgeteilt ist.
  10. Kühlschrank nach Anspruch 9,
    wobei die zweite Kaltlufterzeugungseinheit (500) mehrere Verdampfer (531, 532) umfasst, die miteinander in Reihe geschaltet sind und jeweils verwendet werden, um die Kaltluft zu erzeugen, die jeweils unterschiedliche Temperaturbänder aufweist, und
    wobei der verbleibende Teil der mehreren Kühlfächer (610, 620, 630, 640) jeweils mehrere Kühllagerungsfächer umfasst, die durch die Kaltluft gekühlt werden, die jeweils unterschiedliche Temperaturbänder aufweist, die durch die mehreren Verdampfer erzeugt wird, die in der zweiten Kaltlufterzeugungseinheit (500) enthalten sind.
  11. Kühlschrank nach einem der Ansprüche 1 bis 10, wobei ein Teil der mehreren Kühlfächer (610, 620, 630, 640) ein Kühlfach vom Typ mit direkter Kühlung umfasst, das durch wenigstens einen Verdampfer vom Typ mit direkter Kühlung ausgeführt wird, der in der ersten Kaltlufterzeugungseinheit (400) oder in der zweiten Kaltlufterzeugungseinheit (500) enthalten ist.
EP07833812.6A 2006-11-09 2007-11-02 Vorrichtung für kühlzyklus und kühlvorrichtung Not-in-force EP2079971B1 (de)

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KR1020060110670A KR100808180B1 (ko) 2006-11-09 2006-11-09 냉동사이클장치 및 냉장고
PCT/KR2007/005504 WO2008056913A2 (en) 2006-11-09 2007-11-02 Apparatus for refrigeration cycle and refrigerator

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EP2079971A4 EP2079971A4 (de) 2015-01-21
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JP2010509560A (ja) 2010-03-25
WO2008056913A2 (en) 2008-05-15
US8769975B2 (en) 2014-07-08
US20100037650A1 (en) 2010-02-18
CN101535745A (zh) 2009-09-16
WO2008056913A3 (en) 2008-09-18
JP5260535B2 (ja) 2013-08-14
EP2079971A4 (de) 2015-01-21
EP2079971A2 (de) 2009-07-22
CN101535745B (zh) 2012-05-09

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